41. A hot short metal is
42. Out of the following substances, one ton of __________ will store the maximum heat for a rise of 30°C in temperature.
43. A static fluid can not have
44. Percentage of differential pressure lost in a venturimeter with a tapering of 15° may be about
45. Maximum permissible air velocity in pipelines is about __________ metre/second.
46. Aluminium oxide (an abrasive) is used for grinding
47. For infinite parallel planes having emis-sivities $${{\varepsilon _1}}$$ & $${{\varepsilon _2}}$$, the interchange factor for radiation from surface 1 to surface 2 is given by
48. In case of simple harmonic motion, displacement is proportional to the
49. The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is
50. The path and movements followed by men, materials & equipments in executing the activities is indicated by the
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- Chemical Engineering Basics - Section 13